diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7efd20bdf..5c47472ce 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -80,6 +80,12 @@ jobs:
           target: riscv32imc-unknown-none-elf,riscv32imac-unknown-none-elf
           toolchain: stable
           components: rust-src
+      # Install the Rust nightly toolchain for RISC-V devices, because of `-Zdoctest-xcompile`
+      - uses: dtolnay/rust-toolchain@v1
+        with:
+          target: riscv32imc-unknown-none-elf,riscv32imac-unknown-none-elf
+          toolchain: nightly
+          components: rust-src
 
       - uses: Swatinem/rust-cache@v2
         with: